A new CRISPR-based gene-editing tool has been developed which could lead to better treatments for patients with genetic disorders. The tool is an enzyme, AsCas12f, which has been modified to offer the same effectiveness but at one-third the size of the Cas9 enzyme commonly used for gene editing. The compact size means that more of it can be packed into carrier viruses and delivered into living cells, making it more efficient.
Researchers created a library of possible AsCas12f mutations and then combined selected ones to engineer an AsCas12fwith 10 times more editing ability than the original unmutated type. This engineered AsCas12f has already been successfully tested in mice and has the potential to be used for new, more effective treatments for patients in the future.
Its large size means that Cas9 can lack efficiency when used for gene therapy. So, a large multi-institutional team worked to develop a smaller Cas enzyme that is just as active, but more efficient. "Based on insights gained from the structural analysis of AsCas12f, we selected and combined these enhanced-activity amino acid mutations to create a modified AsCas12f. This engineered AsCas12f has more than 10 times the genome-editing activity compared to the usual AsCas12f type and is comparable to Cas9, while maintaining a much smaller size."
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Examining the genesis of CRISPR's molecular scissorsGenome engineering may be the future of medicine, but it relies on evolutionary advances made billions of years ago in primordial bacteria, the original masters of gene editing.
Read more »
Newly discovered pangolin species could aid in fight against extinctionPangolins are among the world’s most heavily poached animals. A newly discovered species could help conservationists fight against their extinction, researchers say.
Read more »
Monad reveals token name in newly released technical documentsThe technical documents provide the core details on how the Monad blockchain will work, ahead of its Q4 testnet.
Read more »
Newly public Dallas company lands U.S. Project BioShield contract worth $149 millionTwo weeks after going public on Nasdaq, a Dallas firm is reeling in a U.S. government contract worth up to $149 million to put its burn wound imaging...
Read more »